Cressi is proud to still manufacture the vast majority of it's products in its head quarters building in Genoa, Italy. This allows a very high level of quality control, since Mr. Cressi is able to follow the production process personally on a daily basis. Genoa is located 30 minutes driving distance from the beautiful marine bay of Portofino, a diving paradise since the 1940's, and this allows Mr. Cressi and the Cressi Team to easily test in the water every product that Cressi makes. Second of Cressis fifty-year experience has gone into these fins, which are a modern revival of the successful principles of the glorious light blue rubber Rondine fins. The blade is made from light and at the same time reactive polypropylene. During moulding the blade is coalesced with a soft, flexible thermo-rubber (elastomer), which is used for the foot pocket, for the frames and for some inserts. Rondinella is made with polypropylene, a material lightweight and incredible durable His ergonomic shape is perfect for the feet, so it's comfortable to use.